private static function hasValidOutputFileSet()

in src/markdown-extensions/extracted-code-blocks/FilterBase.php [405:457]
41 lines of code
9 McCabe index (conditional complexity)

  private static function hasValidOutputFileSet(
    string $hack_file_path,
    Files $expect,
    Files $example,
    Files $expectf,
    Files $expectregex,
    bool $needs_example,
  ): bool {
    // Not all of these are allowed to exist at the same time, but at this point
    // we may not know which exact combination will be generated, so for the
    // purposes of self::$validFiles we have to consider them all valid. There
    // are additional checks below for any invalid combinations.
    self::$validFiles[] = $hack_file_path.'.'.$expect;
    self::$validFiles[] = $hack_file_path.'.'.$expectf;
    self::$validFiles[] = $hack_file_path.'.'.$expectregex;
    self::$validFiles[] = $hack_file_path.'.'.$example;

    $has_expect = \file_exists($hack_file_path.'.'.$expect);
    $has_expectf = \file_exists($hack_file_path.'.'.$expectf);
    $has_expectregex = \file_exists($hack_file_path.'.'.$expectregex);
    $has_example = \file_exists($hack_file_path.'.'.$example);

    if ($has_expect) {
      // Simple case, .expect must be the only file.
      invariant(
        !$has_expectf && !$has_expectregex && !$has_example,
        '%s has a .%s file, but also other conflicting expect/output files!',
        $hack_file_path,
        $expect,
      );
      return true;
    }

    // Exactly one of these must be present, but never both.
    invariant(
      !$has_expectf || !$has_expectregex,
      '%s has both a .%s and a conflicting .%s file!',
      $hack_file_path,
      $expectf,
      $expectregex,
    );

    // Example file should exist if and only if $needs_example is set.
    invariant(
      $needs_example || !$has_example,
      '%s has a redundant .%s file!',
      $hack_file_path,
      $example,
    );

    return (!$needs_example || $has_example) &&
      ($has_expectf || $has_expectregex);
  }